Cửa Hiển Nhơn (Hien Nhon Gate) is one of four gates located in the East of the Hue Imperial Citadel to enter and leave the Citadel. Hien Nhon Gate was built in 1805 under the reign of King Gia Long.

The Citadel Gate (Cu­a Ngo Mon) in Thua Thien Hue, Vietnam, is the main entrance to the Imperial City, a UNESCO World Heritage site and the former capital of Vietnam during the Nguyen Dynasty. The Citadel Gate is one of the most iconic structures within the Imperial City and serves as the entrance to the Forbidden Purple City, which was reserved exclusively for the emperor, his family, and his royal concubines.

Cu­a Chanh Dong hay cu­a Dong Ba (Chanh Dong Gate) is located in the east and is one of the ten main gates of Hue citadel. Dong Ba Gate was built in 1809 under the reign of King Gia Long. By the reign of King Minh Mang, it was solidly built and completed as it is today.

Cửa Chương Đức (Chuong Duc Gate) is one of four doors to enter the Hue Imperial Citadel. It is located in the Le Huan street, Thua Thien Hue.

Dien Voi Re (Mieu Long Chau) or Elephant Zoo is a famous historical site located in Thuy Bieu, Thua Thien Hue, Vietnam. It is a historical relic of a herd of elephants under the Nguyen dynasty. This unique relic is the vestige of Hue ancient capital.

Cửa Ngăn (cu­a The Nhan) is a historical site that holds cultural and architectural significance. Cu­a Ngan is situated in the heart of Hue City, which is known for its rich history as the former imperial capital of Vietnam. It is located in the Phu Hoa neighborhood, which is within close proximity to many other notable landmarks and attractions in the city.

Vua Duy Tan, whose birth name was Nguyen Phuc Vinh San, was the 11th emperor of the Nguyen Dynasty in Vietnam. He was born on October 19, 1900, and reigned from 1907 until 1916. Duy Tan's reign was significant because he sought to modernize and reform Vietnam, advocating for greater independence from French colonial rule.

Emperor Dong Khanh was the ninth emperor of the Nguyen Dynasty of Vietnam. He reigned three years between 1885 and 1889. He was born on March 20, 1864, in Hue, the capital city of Vietnam at the time and was another adopted son of Tu Duc who usurped the throne shortly after the French gained control of Hue. The tomb of Emperor Dong Khanh is the smallest.

Vua Thanh Thai, whose full name was Nguyen Phuc Bu­u Lan, was the tenth emperor of the Nguyen Dynasty in Vietnam. He was born on March 14, 1879, and ruled from 1889 to 1907. Vua Thanh Thai ascended to the throne at a young age, only nine years old, after the death of Emperor Dong Khanh.

An Dinh Palace (Cung An Dinh) is a historic royal palace located in Hue, Thua Thien-Hue Province, Vietnam. It was built in 1917 during the reign of Emperor Khai Dinh of the Nguyen Dynasty and served as his summer palace.